What is an ATX Motherboard?
ATX is a specification (also called a form factor) for the layout and design of the built-in components on a computer motherboard. It was introduced in 1995 and replaced the Baby AT design.Standard SizeThe standard full-size ATX motherboard measures 12 inches (305 milimeters) wide by 9.6 inches (244 mm) deep. Boards derived from this design must use corresponding mounting holes to ensure compatibility across a wide variety of case designs and provide proper board support.Standard ConnectorsThe ATX design was the first to provide a full range of connectors for input and output devices (mice, printers, etc.) directly on the motherboard. Previous designs included only a keyboard connector.CPU PositionOther motherboards placed the CPU in a direct line with the expansion card slots. The ATX design moved the CPU socket to the side, allowing longer and more complex cards to be inserted in the slots. For the same reason, the memory sockets were also moved to the side.Expansion SlotsThe ATX boa